Open FileChooserDemo application.
Press Show FileChooser button. Open dialog appears.
From the viewport list, choose a folder and press Return to get in.
In this moment, the viewport list changes and, also, the "Look In" combo box value changes.
Orca presents the change from "Look In" combo box and, after that, the new selection from viewport (the unselected list item) - if exists, instead of presenting only the viewport list change.

This happens because the events are comming in other order in java applications.